Operation and Service Manual
Contents
1. Electrode Body Figure 4 2 16452A Replaceable Parts Around SMA Connector Table 4 3 16452A Replaceable Parts Around SMA Connector Ref Agilent Part Desig Number Qty Description 1 16452 61603 2 SMA Cable Assembly for High Electrode 16452 61602 2 SMA Cable Assembly for Low Electrode 2 16452 25001 4 Insulator 3 16452 29001 4 O Ring 4 16452 25002 8 Insulator 5 2190 0654 8 Washer M2 6 0515 0976 8 Screw M2 44 Service ADQ04003 Figure 4 3 Inside of the Electrode Assembly Assembling Procedure for Electrode See Figure 4 2 and Table 4 3 for the reference designators 1 Pass the SMA cable assembly through the insulator and the O ring 2 Insert the cable into the electrode body and connect it using the insulators the washers 5 and the screws 3 Bend the semi rigid cable at 33 mm from the top face of the electrode body as described in Figure 4 3 and set the angle between the semi rigid cables close to 90 4 Solder the semi rigid cables to the center pin of the electrode 5 Solder the shield of the cable to the copper round plate using solder wick Service 4 5 Troubleshooting When the short residual resistance is out of the limit check the fixture connection the shorting plate and the surface of the electrodes If the s2. Spacer Figure 1 1 Electrode Size of the 16452A section view Weight 1 4kg Maximum Operating Voltage Ls e 30 Vrms 1 2 General Information Operating Frequency i sieeseeeeeeeeeeeeeeee ee nee ee ee ee nee tenets 20 Hz to 30 MHz The operating frequency differs according to the instrument that the 16452A is used with With the 4194A e 100 Hz to 15 MHz With the 4284A ecc 20 Hz to 1 MHz With the 4285A ccccc ee ee ee ee ee ee ee ee ee a ee ee a ee ea ee eas 75 kHz to 30 MHz Materials Test fixture body electrodes spacers liquid inlet and outlet Nickel plated cobal Fe 54 Co 17 Ni 29 Insulator eeueeeeeeeeeeeeeereereeennree cenn seen bene erreren Ceramic alumina Al203 O ring e Viton Fluoro rubber Insulator soldering isuseeeeeeeeeeeeeeeeeee ee nee nee ns Silver copper and gold copper The typical corrosive characteristics of these materials are shown in Appendix A Operating Temperature 00 0 0 00 n ee sis ne 20 to 125 C The measurement cable s operating temperature is 16048A Leci 0 to 55 C 16452 61601 200 nnn tte nee seen nee see nes 20 to 125 C Non Operating Temperature LL Les ae 40 to 70 C General Information 1 3 Supplemental Performance Characteristics This section lists supplemental performance characteristics Supplemental performance characteristics are not specifications but are typical characteristics included
3. 1 The O rings are assembled in the 16452A 2 The 1 3 mm spacer is assembled in the 16452A 3 The cap is on the SMA BNC adapter 4 The carrying case and the Operation and Service Manual are not shown in the Figure 2 1 5 The fixture stand is shown in Figure 2 2 Assemble it as shown in the figure 6 The stand body is assembled using the two angle irons 16452 01201 and the four screws 0515 0914 If you ordered a measurement cable 16048A or 16452 61601 check that the cable is included A ADOOZ001 Stand body Stand foot Figure 2 2 Assembling the Fixture Stand Initial Inspection 2 3 Repackaging the Test Fixture For Shipment If shipment to a Agilent Technologies service center is required each test fixture should be repackaged using the original factory packaging materials If this material is not available comparable packaging materials may be used Wrap the liquid test fixture in heavy paper and pack in anti static plastic packing material Use sufficient shock absorbing material on all sides of the 16452A to provide a thick firm cushion and to prevent movement Seal the shipping container securely and mark it FRAGILE 2 4 Initial Inspection Operation Introduction This chapter describes how to measure the dielectric constant of the liquid using the 16452A m The standard measurement sequence is shown in this chapter a Some instructions for the temperature measurement are
4. 4285A 1 Press CORRECTION 2 Place the cursor on SHORT using S M C 3 Press MEAS SHORT After the SHORT measurement is completed press ON 3 10 Operation Air Capacitance Co Measurement 1 Separate the test fixture as shown in Figure 3 9 5 J OGO usr 5 D ADO0301 shorting plate The 1 3mm Spacer can be distinguished from others by the third hole Figure 3 9 Separating the Test Fixture into High and Low Electrodes 2 Remove the shorting plate and select the spacer that is to be used to measure the liquid Then assemble the test fixture NEE Scarce m Set the spacer Figure 3 10 Test Fixture Assemble for Measurement Operation 3 11 3 Measure the air capacitance value Co and record the measurement data The data is used to calculate the dielectric parameter Note Compare the measured value with the value in the Supplemental I Characteristics in Chapter 1 TA 1 If the value is not correct check the following o Was the spacer correctly chosen and set o Are the O rings set correctly o Are the high and low electrodes put tightly together Then perform the measurement procedure again Liquid Capacitance and Resistance Cp Rp Measurement Warning Be careful when dealing with liquids especially volatile and or flammable liquid such as oil or organ
5. WARNINGS given elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument The Agilent Technologies assumes no liability for the customer s failure to comply with these requirements DO NOT Operate In An Explosive Atmosphere Do not operate the instrument in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a safety hazard Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel Do not replace components with the power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power and discharge circuits before touching them DO NOT Service Or Adjust Alone Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT Substitute Parts Or Modify Instrument Because of the danger of introducing additional hazards do not substitute parts or perform unauthorized modifications to the instrument Return the instrument to a Agilent Technologies Sales and Service Office for service and repair to ensure the safety features are maintained Dangerous Procedure Warnings Warnings such as the example below precede potentially dangerous procedures th
6. for repair or replacement without waiting for the claim to be settled m Inspect the shipping container for damage Keep the shipping materials until the inspection is completed a Verify that the shipping container contains everything shown in Figure 2 1 and listed in Table 2 1 m Inspect the exterior of the 16452A for any signs of damage Initial Inspection 2 1 Product Overview I e AD002002 Figure 2 1 16452A Product Overview 2 2 Initial Inspection 6 q p q p q p q p Table 2 1 Contents Reference Description Part Number Quantity Designator D Liquid test fixture 16452A 1 O ring for electrodes 0905 1275 2 Shorting plate 16092 08010 1 O ring for liquid outlet 0905 1277 1 Spacer 1 3 mm thickness 0 3 mm gap 16452 00601 1 1 5 mm thickness 0 5 mm gap 16452 00602 1 2 0 mm thickness 1 0 mm gap 16452 00603 1 3 0 mm thickness 2 0 mm gap 16452 00604 1 6 Lid of liquid outlet 16452 24002 1 SMA BNC adapter 1250 1200 4 Waterproof cap for BNC connector 1252 5831 4 Carrying Case 16452 601014 1 Operation and Service Manual 16452 90000 1 Fixture stand Stand body 6 1 Screw for stand 0515 0914 4 Stand foot 16452 00611 1
7. plate contact to both high and low electrodes o Are the electrodes clean and free from rust 2 If the problem cannot be corrected please contact the nearest Agilent Technologies sales office Setting the Instrument for Capacitance Measurement To measure the dielectric constant the test fixture uses a capacitance measurement method This is done by measuring Cp parallel equivalent capacitance and Rp parallel equivalent resistance and then calculating the dielectric constant and the dielectric loss tan Using the 4194A 1 Select the measurement parameter Cp Rp a Press FUNCTION IMPEDANCE more 1 3 more 2 3 Cp Rp 2 Select the other settings depending on each application Using the 4284A 4285A 1 Select the measurement parameter Cp Rp a Place the cursor on FUNC using gt 1 C b Press Cp Bp 2 Select the other settings depending on each application Operation 3 9 Performing a SHORT Compensation Confirm that the 1 3 mm spacer and the shorting plate are set as specified in the Preparation of Test Fixture for Use Note The OPEN and LOAD compensations are not required for the 16452A I w Using the 4194A L Press COMPEN ZERO SHORT ENTER EXECUTE 2 Press SHRT OFS ON Note After the ZERO SHORT measurement the 4194A goes to SINGLE SWEEP mode I To select the REPEAT SWEEP mode press REPEAT until the light turns on Y Using the 4284A
8. provided at the back of the chapter Measurement Sequence Relative permittivity er can be calculated from the ratio of the capacitance of a material to that of air nearly equal to that of a vacuum The standard measurement sequence is as follows 1 Prepare the test fixture for use Connect the test fixture Check the SHORT residual Set the instrument for capacitance measurement Do a SHORT compensation Do the air capacitance Co measurement Do the liquid capacitance and resistance Cp Rp measurement Drain the liquid after measurement o oo N a n A WC DN Do the data processing Calculate dielectric parameter from measurement data Measurement Requirements m To do the measurement the following items are required o 16452A liquid test fixture o Fixture stand furnished with the 16452A SMA BNC adapter furnished with the 16452A o Measurement cable 16048A or 16452 61601 o 1 3 mm spacer for the SHORT compensation furnished with the 16452A o Shorting plate for the SHORT compensation furnished with the 16452A o A spacer choose one of the furnished four spacers o Measurement instrument 4194A 4284A or 4285A o Liquid under test enough for the spacer you are using a In addition the following items are useful O For washing the 16452A a brush detergent cloth etc o For high temperature measurements gloves to prevent scalding Operation 3 1 Preparation of Test
9. 9 Separating the Test Fixture into High and Low Electrodes 2 3 11 3 10 Test Fixture Assemble for Measurement 0 0 0 eee ees 3 11 3 11 Poring the Liquid under Test a a a a ee ee ee ee ee ee Ce 3 12 3 12 Taking the Lid Off 2 ee ee ee ee ee ee Ce Ce ee Ce Ce 3 14 3 13 Stray Capacitance 2 vs assa ee ee ee ee ee ee ee ee ea 3 16 3 14 Correction Coefficient 2 2 a a ee ee ee ee ee ee Ce ee 3 16 3 15 Soaking the 16452A in the Oil Tank a v v usa ee ee ee Ce ee 3 17 4 1 16452A Replaceable Parts Major Parts v vs ee 002 0808 4 2 4 2 16452A Replaceable Parts Around SMA Connector 2 2 2 4 4 4 3 Inside of the Electrode Assembly 2 2 a ee ee ee ee ee s 4 5 Tables 1 1 Typical Data a a jus A 1 4 2 1 Contents 2 ee ee ee ee ee ee ee ee ee Ce Ce Ce Ce 2 3 4 1 Replaceable Parts Major Parts 2 2 2 ee 4 2 4 2 Replaceable Parts Other parts 2 6 2 a A 4 3 4 3 16452A Replaceable Parts Around SMA Connector 2 2 2 4 4 Contents 3 General Information Introduction The purpose of this manual is to enable you to use your 16452A Liguid Test Fixture efhciently and confidently Manual Summary This manual contains the following m The specifications of the 16452A see this chapter m Inspecting the 16452A see Chapter 2 m Operating the 16452A see Chapter 3 m Ordering replaceable parts for the 16452A see Chapter 4 Prod
10. Agilent 16452A Liquid Test Fixture Operation and Service Manual ta e ete Et Agilent Technologies Agilent Part No 16452 90000 Printed in JAPAN January 2000 Third Edition Notice The information contained in this document is subject to change without notice This document contains proprietary information that is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of the Agilent Technologies Agilent Technologies Japan Ltd Component Test PGU Kobe 1 3 2 Murotani Nishi ku Kobe shi Hyogo 651 2241 Japan Copyright 1994 1996 2000 Agilent Technologies Japan Ltd Manual Printing History The manual printing date and part number indicate its current edition The printing date changes when a new edition is printed Minor corrections and updates that are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated January 1994 anaana c cece ences First Edition part number 16452 90000 June 1996 2 ccc cnn es Second Edition part number 16452 90000 January 2000 00 0 es Third Edition part number 16452 90000 Safety Summary The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific
11. Fixture for Use Before connecting the test fixture you must connect the SMA BNC adapters to the 16452A terminals Also the spacer and shorting plate must be set between the electrodes for the SHORT compensation The 16452A can be separated into High and Low electrodes to make it possible to set the spacer and the shorting plate The test fixture s electrodes are easier to clean if you separate the electrodes Connecting the SMA BNC Adapters to the 16452A Connect the SMA BNC Adapters to the 16452A SMA terminals as shown in Figure 3 1 The waterproof caps for the BNC connector should be on when washing the electrodes ADOO3008 Figure 3 1 Connecting the SMA BNC Adapter 3 2 Operation Separating the Test Fixture into High and Low Electrodes Separate the test fixture as shown in Figure 3 2 TD ETTA The 1 3mm Spacer can be TT Co distinguished from others A by the third hole oO bg 9 BE ADQ03007 Figure 3 2 Separating the Test Fixture into High and Low Electrodes Cleaning and Drying the Electrodes For the measurement the 16452A electrodes must be clean If the 16452A s electrodes are smeared wash and dry them thoroughly before assembling Caution Do not use a detergent that corrodes the test fixture For a list of the materials that are corrosive to the test fixtures see Appendix A Operation 3 3 Assembling the T
12. aps off and connect the test fixture to the unknown terminal using the cables Lp Lpor Le Cour Hp Hror Hc Hour HP 4194A 0000 DADO oo ADOO3002 Figure 3 6 Connecting the Test Fixture 4194A Operation 3 5 Using the 4284A 4285A 1 Set the cable length When using the 16048A or 16452 61601 cable set the cable length to 1 m as follows a Press CORRECTION b Place the cursor on CABLE using C CS_ CL CZ C Press im When you use the test leads for the first time you must perform the cable correction For information on how to perform the correction see the 4284A 4285A Operation Manual 2 Take the BNC adapter caps off and connect the test fixture to the unknown terminal using the cables Lp Lpor Le Cour Hp Hror Hc Hour HP 4284A HP 4285A ms Figure 3 7 Connecting the Test Fixture 4284A 4285A The 16452 61601 cable can be used in the same manner as the 16048A cable with 4284A 4285A 3 6 Operation Fixture Stand Usage The fixture stand sets the test fixture stable and upright as required during the measurement qq ESSO Figure 3 8 Fixture Stand Usage Operation 3 7 Checking the SHORT Residual Before using the test fixture you should check its electrical performance You can confirm its p
13. as additional information for the operator Supplemental performance characteristics are not guaranteed Electrode gap repeatability Screw torque 15 kgf cm Assembly repeatability 00 00 0000 000 cece eet ee ee see es See Table 1 1 Temperature repeatability 28 C to 125 C 2 2 0 See Table 1 1 Necessary liquid volume 0 0 0 00 c ccc tenn re ee ea See Table 1 1 Air Capacitance Value 23 C 5 C 1 MHZ 0 eee See Table 1 1 Table 1 1 Typical Data Spacer thickness 1 3 mm 1 5 mm 2 0 mm 3 0 mm Electrode gap 0 3 mm 12 um 0 5 mm 12 pm 1 0 mm 12 pm 2 0 mm 12 pm assembly repeatability Electrode gap 0 3 mm 2 pm 0 5 mm2 pm 1 0 mm2 pm 2 0 mm2 pm temperature repeatability Necessary liquid volume 3 4 ce 3 8 ce 4 8 ce 6 8 ce Air capacitance value 34 9 pF 25 21 2 pF 15 10 9 pF 10 5 5 pF 10 Short residual when using the furnished shorting plate with a 1 3 mm spacer Ls equivalent series inductance 00 ccc iene 20 nH Rs equivalent series resistance 2 0 0 0 00 ccc eeee nee ee nee nee nent nee ns 0 5 Q Temperature expansion coefficient LL LL Lee see seen nee ee ee lt 800ppm C Additional impedance measurement error In the following measurement m The SHORT compensation is done a The calculation is done using the capacitive measurement method see Capacitive Measurement M
14. ctrolysis of the liguid When you use the 16452A in a thermostatic chamber or an oil tank see the Performing Temperature Measurements procedure Operation 3 13 Drain the Liguid After Measurement 1 Turn the lid of the liguid outlet and take it off Drain the liguid Figure 3 12 Drain the liquid from here Va Figure 3 12 Taking the Lid Off ADO03005 2 Wash and dry the test fixture 3 14 Operation Data Processing Calculate Dielectric Parameter from Measurement Data The dielectric parameter e is calculated from the following equation Cp 1 r Go I CoRp 1 Where a Correction coefficient see next page Er Relative dielectric constant complex Cp Liquid capacitance measurement data Co Air capacitance measurement data Rp Equivalent parallel resistance measurement data w Angular frequency w 27f f Frequency Measurement Theory The relative dielectric constant indicates the energy value of a material in an electric field It is represented as a complex quantity The relative dielectric constant is defined as the ratio of the material s dielectric constant to that of a vacuum co 8 854 x 10 12 r 0 Also r Ep je 2 Loss tangent t tan la Er Where El Relative dielectric constant en Dielectric loss The 16452A and Agilent impedance analyzer LCR meter use the Capacitive Method for obtaining relativ
15. e ee 4 Service Introduction a a a a ee ee A Assembly Replacement 2 2 2 2 ee ee ee ee ee ee ee Ce Ce s Electrode Assembly vs ee ee a Assembling Procedure for Electrode 084 Troubleshooting 2 oaa aa Ce s A Liquids that Corrode the Test Fixture Nickel Corrosive Liquid 0 ee A Ceramic alumina AlsOs Corrosive Liquid 4 Viton Fluoro rubber Corrosive Liquid 2 2 08 Silver copper and gold copper 2 1 ae ee ee ee ee ee Ce ee Contents 2 4 1 4 1 4 4 4 5 4 6 A 1 A 2 A 2 Figures 1 1 Electrode Size of the 16452A section view 2 ee ee Ce 1 2 1 2 Fixture Error A 2 2 2 ee ee ee ee ee ee Ce ee Ce Ce Ce is 1 5 1 3 Fixture Error B u easa ee ee ee ee ee ee Ce ee Ce Ce Ce a 1 5 1 4 Fixture Error A B ee ee ee ee a 1 5 2 1 16452A Product Overview 2 2 1 ee ee A 2 2 2 2 Assembling the Fixture Stand 0 2 0 0 0 000 080 2s 2 3 3 1 Connecting the SMA BNC Adapter a a eee ee ee 3 2 3 2 Separating the Test Fixture into High and Low Electrodes 3 3 3 3 Assembling the Test Fixture for a SHORT Compensation 2 2 3 4 3 4 Putting the LidOn jus A 3 4 3 5 Cable length switch 4194A 2 2 ee 3 5 3 6 Connecting the Test Fixture 4194A A 3 5 3 7 Connecting the Test Fixture 4284A 4285A 2 2 ee ee ee 3 6 3 8 Fixture Stand Usage 2 a a ae A 3 7 3
16. e permittivity by measuring the capacitance of a material that is sandwiched between parallel electrodes Capacitive Measurement Method The dielectric coefficient c and loss lt can be calculated from the capacitance and electrode dimensions pe tx Cp r Ax E0 o t w X Eq w x Rp x cox Ho r Where the conductivity o A is area of electrode t is gap between electrodes The dielectric constant of a vacuum o is calculated from the capacitance of the vacuum Approximately equal to air capacitance Co tx Co A Therefore the equation 2 can be rewritten in the same form as equation 1 when a 1 Eq Operation 3 15 Correction Coefficient The measured data Cp Co contains the stray capacitance which alters by the dielecteric constant Stray capacitance 33 Electrodes Figure 3 13 Stray Capacitance The stray capacitance can be cancelled by multiplying the correction coefficient a as shown in equation 1 The value of a is calculated by following equation o 100 m 97 0442 2 2 9558 1 3 10 30 100 300 500 Erm Figure 3 14 Correction Coefficient Where m is the right side of equatrion 1 enclosed by Cp 1 Erm Go J CORD Therefore Em Cp 1 Erm Co wCoRpy 3 16 Operation Performing Temperature Measurements The following information is provided for users who use
17. erformance by checking the SHORT residual The SHORT residual must be measured with the compensation function OFF because the compensation cancels the SHORT residual Using the 4194A 1 Set the compensation function OFF a Press COMPEN OPEN OFS on off When the softkey is dark the compensation is OFF b Press COMPEN SHRT OFS on off When the softkey is dark the compensation is OFF 2 Select the measurement parameter Ls Rs a Press IMPEDANCE Ls Rs 3 Check the SHORT residual is the required value a Press DISPLAY menu AUTO SCALE A b Press more 1 3 AUTO SCALE B c Press until the light is ON d Check that the Ls and Rs value at 1 MHz is in the following range Ls lt 20 nH Rs lt 0 5 0 Using the 4284A 4285A 1 Set the compensation function OFF a Press CORRECTION b Move the cursor to OPEN and press OFF C Move the cursor to SHORT and press OFF d Move the cursor to LOAD and press OFF 2 Select the measurement parameter Ls Rs a Press DISPLAY FORMAT b Move the cursor to FUNC and press more 1 6 more 2 6 more 3 6 Ls Rs 3 Check the SHORT residual value at 1 MHz is in the following range Ls lt 20 nH Rs lt 0 5 0 3 8 Operation H the SHORT Residual is Out of Range 1 Check the connection of the test fixture and the measurement cable Also check the shorting plate connection o Is the spacer width in the 16452A 1 3 mm o Does the shorting
18. es when a name or a variable must be typed in place of the words in italics For example copy filename means to type the word copy to type a space and then to type the name of a file such as filet Computer font is used for on screen prompts and messages Labeled keys on the instrument front panel are enclosed in 1 Softkeys located to the right of the CRT are enclosed in Contents 1 General Information Introduction a v vs a ee ee ee ee ee ee ee ee Ce Ce Ce Ce 1 1 Manual Summary Ls save ee ee ee ee ee ee ee ee ea 1 1 Product Description usa ae ee a A 1 1 Applicable Instrument Ce A 11 Accessories 2 ee ee is CA e 1 2 Furnished Accessories Ce 1 2 Recommended Measurement Cables e o 1 2 Specifications ooa usa ee A 1 2 Supplemental Performance Characteristics 0 0 2 00 1 4 2 Initial Inspection Introduction a a assa ee ee ee ee ee ee ee ee Ce Ce Ce Ce Ce is 2 1 Product Overview ooa ee ee ee ee ee ee ee ee Ce Ce Ce Ce Ce is 2 2 Repackaging the Test Fixture For Shipment 2 0 2422 2 4 3 Operation Introduction a a assa ee ee ee ee ee ee ee ee Ce Ce Ce Ce Ce is 3 1 Measurement Sequence 2 1 o a a ae ee ee ee ee ee ee Ce ee 3 1 Measurement Requirements 2 ee a ee Ce Ce ee 3 1 Preparation of Test Fixture for Use 2 2 ae A 3 2 Connecting the SMA BNC Adapters to the 16452A 002 222020202 3 2 Separat
19. est Fixture Set the 1 3 mm spacer electrode distance is 0 8mm and the shorting plate as required Then assemble the 16452A as shown in Figure 3 3 5 J OGO usr 5 shorting plate The 1 3mm Spacer can be distinguished from others by the third hole AAD09301 Figure 3 3 Assembling the Test Fixture for a SHORT Compensation Putting the Lid On the Liquid Outlet Put the lid on the liquid outlet as shown in Figure 3 4 amp O ring for liquid outlet lid of the liquid outlet ADO03006 Figure 3 4 Putting the Lid On 34 Operation Connecting the Test Fixture Use a 4 terminal pair BNC cable to connect the 16452A and your measurement instrument Agilent Technologies recommends using the following cables For the temperature range of 0 to 55 C 16048A Test leads For the temperature range of 20 to 125 C 16452 61601 Test leads Select the cable that matches your measurement Using the 4194A 1 Set the cable length When using the 16048A or 16452 61601 cable set the cable length to 1 m as follows Turn the 4194A OFF Then set the Cable Length switch to 1 m Figure 3 5 After setting the switch turn the 4194A ON a000 0000 UNKNOWN CABLE LENGTH Set to im iss a Lan Leor ax Hor Har im re go o Figure 3 5 Cable length switch 4194A 2 Take the BNC adapter c
20. ethod in Chapter 3 m The measurement instrument is an 4194A 4284A or 4285A m The relative dielectric constant is 1 lt lt 500 The fixture error is defined by Error A B See Figure 1 4 Where A Obtained from Figure 1 2 B Obtained from Figure 1 3 The measurement accuracy is a complex function of the measurement instrument accuracy and the fixture error 1 4 General Information Error B lerm Figure 1 2 Fixture Error A 0 1 20 ADOOIOO1 2 A sense sneon _ 10 a ee ee 1 o E o It 01 500k 2M 5M 15M20M 100 1k 10k 100k 1M 10M 30M Ha Frequency Figure 1 3 Fixture Error B Er Jr The true value is a vector sum of Er and Err Where Er Measurement result Err Fixture Error Err 0 The true value lt A B is in this area Er Figure 1 4 Fixture Error A B General Information 1 5 Initial Inspection Introduction The liquid test fixture has been carefully inspected before being shipped from the factory It should be in perfect physical condition no scratches dents or the like It should also be in perfect electrical condition Verify this by carefully performing an initial inspection to check the liquid test fixture set for signs of physical damage and missing contents If any discrepancy is found notify the carrier and Agilent Technologies Your Agilent Technologies sales office will arrange
21. hock in case of a fault Used with wiring terminals to indicate the terminal which must be connected to ground before operating equipment Low noise or noiseless clean ground earth terminal Used for a signal common as well as providing protection against electrical shock in case of fault A terminal marked with this symbol must be connected to ground in the manner described in the installation Operation manual and before operating the equipment Frame or chassis terminal A connection to the frame chassis of the equipment which normally includes all exposed metal structures Alternating current power line Direct current power line Alternating or direct current power line Warning denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in injury or death to personnel Caution sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result damage to or destruction of part or all of the product Note denotes important information It calls attention to a procedure practice condition or the like which is essential to highlight vii Typeface Conventions Italics Computer HARDKEYS SOFTKEYS viii Italic type is used for emphasis and for titles of manuals and other publications Italic type is also used for keyboard entri
22. ic solvents that can cause an accident Accidents such as an explosion ignition emission of poison gas scalding by heat or chemicals and so on are possible To prevent any accidents establish a strict process for the measurements For example using appropriate ventilation a gas mask and gloves 1 Pour the liquid under test into the 16452A until the liquid fills tube Pour the liquid gently so that air does not get mixed in with the liquid Pour the liquid from here or A must be open pour the liquid from here must be capped ADO03004 Figure 3 11 Poring the Liquid under Test 3 12 Operation Warning When you pour the liquid be careful that the liquid does not leak from the test fixture An 16452A assembled in the wrong manner for example lack of the O rings or the spacer will cause liquid leakage Assemble the 16452A again if leakage is found If the problem cannot be corrected please contact the nearest Agilent Technologies sales office Warning DO NOT enclose the liquid in the 16452A Carburetion of the liquid enclosed in the 16452A can cause an explosion of the 16452A 2 Measure the capacitance and equivalent parallel resistance value Cp Rp of the liquid under test and record the measurement data The data is used to calculate the dielectric parameter Warning DO NOT apply a dc test signal to the 16452A The dc signal can cause ele
23. ing the Test Fixture into High and Low Electrodes 2 2 3 3 Cleaning and Drying the Electrodes a 3 3 Assembling the Test Fixture 2 2 ee ee ee ee ee ee eis 3 4 Putting the Lid On the Liquid Outlet 0 2022020248 3 4 Connecting the Test Fixture 2 1 ee ee ee ee ee ee ea 3 5 Using the 4194A 2 assa a 3 5 Using the 4284A 4285A aaa aa ee A 3 6 Fixture Stand Usage oao a a a ee ee ee ee ee ee ee Ce ee 3 7 Checking the SHORT Residual 2 ee ee ee ee ee Ce ee 3 8 Using the 4194A 2 svae ee A 3 8 Using the 4284A 4285A aaa aa ee A 3 8 If the SHORT Residual is Out of Range 2 een 3 9 Setting the Instrument for Capacitance Measurement 4 3 9 Using the 4194A 2 svae ee A 3 9 Using the 4284A 4285A aaa aa ee A 3 9 Performing a SHORT Compensation ooa a e a 2 2 0 0 008 3 10 Using the 4194A 2 a 3 10 Using the 4284A 4285A Ww ae a 3 10 Air Capacitance Co Measurement oaoa a a a a aa ee ee ee ee ee 3 11 Liquid Capacitance and Resistance Cp Rp Measurement 2 3 12 Drain the Liquid After Measurement 2 a a eee ee ee is 3 14 Data Processing Calculate Dielectric Parameter from Measurement Data 3 15 Measurement Theory vs suas ee ee ee ee a 3 15 Capacitive Measurement Method 0 0 0 a eee ee 3 15 Contents 1 Correction Coefficient oa a 2 ee A Performing Temperature Measurements v 1 1 ee ee ee e
24. le sulfuric acid H2SOx4 nitric acid HNO3 organic acid nitrous acid HNO2 ferric chloride FeCl cupric chloride CuCl mercuric chloride HgCl acetic acid CH CO gt H formic acid HCO H citric acid HO CC OH CO gt H gt H0 1 In the case of high temperature and air mixed Liquids that Corrode the Test Fixture A 1 Ceramic alumina ALO Corrosive Liquid Aqueous solution of fluoride corrodes the ceramic Viton Fluoro rubber Corrosive Liquid Ketone and ester corrode the Viton Silver copper and gold copper Strong acid liquid corrodes silver copper and gold copper A 2 Liquids that Corrode the Test Fixture
25. ng from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Agilent Technologies specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Exclusive Remedies The remedies provided herein are buyer s sole and exclusive remedies Agilent Technologies shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products For any assistance contact your nearest Agilent Technologies Sales and Service Office Addresses are provided at the back of this manual vi Safety Symbols General definitions of safety symbols used on eguipment or in manuals Warning Caution Note I Instruction manual symbol the product is marked with this symbol when it is necessary for the user to refer to the instruction manual in order to protect against damage to the instrument Indicates dangerous voltage terminals fed from the interior by voltage exceeding 1000 volts must be so marked Protective conductor terminal For protection against electrical s
26. parts for the 16452A The parts listed can be ordered from your nearest Agilent Technologies Office Ordering information must include the Agilent part number and the quantity required Service 4 1 AS Figure 4 1 16452A Replaceable Parts Major Parts Table 4 1 Replaceable Parts Major Parts Ref Agilent Part Desig Number Qty Description 1 16452 60002 1 Low Electrode Assembly 2 16452 24001 4 Screw 3 16452 00601 1 Spacer 1 3 mm thickness 0 3 mm gap 16452 00602 1 Spacer 1 5 mm thickness 0 5 mm gap 16452 00603 1 Spacer 2 0 mm thickness 1 0 mm gap 16452 00604 1 Spacer 3 0 mm thickness 2 0 mm gap 4 16092 08010 1 Shorting Plate 5 0905 1275 2 O Ring 6 16452 24002 1 Lid of Liquid Outlet 0905 1277 1 O Ring for Lid 7 16452 60001 1 High Electrode Assembly 8 1250 1200 4 SMA m BNC f Adapter 1 Assembling procedure of the electrode is described later in this chapter 42 Service Table 4 2 Replaceable Parts Other parts Agilent Part Number Qty Description 16452 04001 2 Round Cover for Back of the Electrode 0905 1276 2 O Ring for the Cover 0515 0994 8 Screw for the Cover 1252 5831 4 Waterproof Cap for BNC Connector 16452 01201 2 Angle Iron for the Stand 16452 00611 1 Plate for the Stand Foot 0515 0914 8 M3 Screw for the Stand 16452 60101 1 Carrying Case 16452 90000 1 Operation and Service Manual Service 43 Electrode Assembly
27. roughout this manual Instructions contained in the warnings must be followed Warning Dangerous voltages capable of causing death are present in this instrument Use extreme caution when handling testing and adjusting this instrument The voltage levels found in this test fixture when used with the intended instruments do not warrant more than normal safety precautions for operator safety Operating Precaution Do not exceed the operating input power voltage and current level and signal type appropriate for the instrument being used refer to your instrument s operation manual Caution Electrostatic discharge EspD can damage the highly sensitive microcircuits in your instrument ESD damage is most likely to occur as the test fixtures are being connected or disconnected Protect them from ESD damage by wearing a grounding strap that provides a high resistance path to ground Alternatively ground yourself to discharge any static charge built up by touching the outer shell of any grounded instrument chassis before touching the test port connectors Never touch the test fixture contacts Use a work station equipped with an anti static work surface Certification Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National In
28. stitute of Standards and Technology to the extent allowed by the Institution s calibration facility or to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of three months from the date of shipment except that in the case of certain components listed in Instrument Specifications of this manual the warranty shall be for the specified period During the warranty period Agilent Technologies will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated by Agilent Technologies Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent Technologies from another country Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instruction when property installed on that instrument Agilent Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free Limitation Of Warranty The foregoing warranty shall not apply to defects resulti
29. the 16452A in a thermostatic chamber or an oil tank The 16452A is specified to operate in the temperature range of 20 to 125 C You should be aware not only of the heat resisting property of the 16452A but also that of the measurement cable The heat resisting properties of the Agilent Technologies recommended cables are Oto 55 C 16048A 20 to 125 C 16452 61601 When you use the thermocouple to monitor the inside temperature of the test fixture be careful not to short the electrodes When you use the 16452A in an oil tank soak the whole circle shown in Figure 3 15 the circle shows the size and position of the liquid space of the 16452A HEWLETT 18462A 00 pasanna LIQUID TEST FIXTURE A WARNING The circle shows size and position of the liquid space ADOO3002 Figure 3 15 Soaking the 16452A in the Oil Tank Warning DO NOT touch the heated test fixture cable and fixture stand with your naked hand Use gloves to prevent scalding Operation 3 17 Service Introduction This chapter covers assembly replacement and troubleshooting information Warning These servicing instructions are for use by qualified personnel only Do NOT perform any servicing other than that contained in the operating section unless you are qualified to do so Assembly Replacement Table 4 1 Table 4 2 and Table 4 3 list the replaceable
30. uct Description The 16452A Liquid Test Fixture provides accurate dielectric constant and impedance measurements of liquid materials This fixture allows you to make frequency swept measurements or temperature coefficient measurements that precisely characterize liquid materials Applicable Instrument The 16452A has been designed to operate specifically with the following LCR meters and impedance analyzers 4194A Impedance Gain Phase Analyzer 4284A Precision LCR Meter 4285A Precision LCR Meter General Information 1 1 Accessories Furnished Accessories See Table 2 1 for the accessories supplied with the 16452A Recommended Measurement Cables You need a 4 terminal BNC cable to connect the 16452A and your measurement instrument For this purpose Agilent Technologies recommends using the following cables For the temperature range of 0 to 55 C 16048A Test leads For the temperature range of 20 to 125 C 16452 61601 Test leads These cables are not furnished with the 16452A Order according to your measurement requirements Specifications This section lists the complete 16452A specifications These specifications are the performance standards and limits against which the 16452A is tested When shipped from the factory the 16452A meets the following specifications Electrode Size S 0 0 cent enn tenet enn ten enas 438 0 5 mm Dimension o aeee eeaeee erore ee ee ee nee ee ins 85 H x85 W x37 D mm
31. urface of the electrode is damaged electrode assembly replacement is required for restoring proper electrical performance When the short residual inductance is out of the limit check the angle of the semi rigid cables in back of the electrode assemblies The angle should be close to 90 Also check the shield of the semi rigid cables are connected only at the copper round plate Caution Do not polish the surface with powder to protect the electrode 4 6 Service Liguids that Corrode the Test Fixture The appendix A provides information about the liguids that corrode the test fixture The liguid under test directly contacts the following materials Nickel the test fixture body electrodes spacers liquid inlet and outlet Ceramic alumina Al O3 the insulator around the electrodes Rubber Fluoro rubber the O rings Silver copper and gold copper the insulator soldering Do not use the test fixture with liquids that corrode these materials Typical corrosive liquids for each material are listed in the following sections Do not apply DC test signal or low frequency test signal to electrolyte solutions ionic solutions such as salt The DC signal or low frequency signal can cause electrolysis reaction of the liquid WARNING Nickel Corrosive Liquid Corrosive liquid Little corrosive liquid Non corrosive liquid acid oxidant and salt oxidant hydrochloric acid HCI alkali salt For examp
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